Method of filling molds for founding



vE. 0.-BEARIII E( AND W. F. PIPER.

METHOD 0F FILLING MOLDS FOR FOUNDING.

. l APPLICATION FILED IULYZI, I92I. g.

Patented Aug'. 29 i922.

Inn/ENTER@ (id/@4a. .2

EY: WMM j@ THEIR ATTURNEY uib Ei. D. BEARDSLEYA AND W, F. PiPER. METHODOF F|LUNG MOLbS FOR FOUNDSNG.

Avvm'cmow min muzi, w21,

ELTEB 0.- BERIDSLEY, 0F C'EGG, AND "WALTER SSEGNORS E0 TEE BELDSLEY Toall whom it muy concern.'

Be it known that ive, Emme O. Birliuiisnnv.

and WALTER F. Pire lUnited States, and the county of Cook and Oak Perk,

description.

The invention relates to the filling of molds used in metal founding byprojection Tin the practice of the invention of the send. set forth inLetters dated Julyy 155 1919,

erieneed in properly projecting and poele ing which are formed Wi 2.0and upwardly convergent walls or with undercut spaces, particularly whenthe ties is provided with e const ieted inlet opening,

because the send proj angle would leiive unfilled spares or loose Z5send in the pockets sides or `vliioli are otherwise ineeee'sihle.

'The primary object of provide :in improved ro]eeted :it

which excessive spattei'ingg the flask and the tendency of the sund todisplace the tiask features hereinafter s tieulnrly defined by claims etthe conclusion hereof.

n the drawings: Fig. l of apparatus embodying,l

Fig. l is e detnil ot is :i 'vertical section, Fig. 3,' o'f the the andmanipulntingir front elevsition1 perts An zippnrnt'us ter practicing theimproved method is exemplified in zi 5G which permits the lnsks toremoved 'from the projector livered to and end comprises axles 4 Wheeels5 A:ind sider to the axles end residents 'of Chicago, in

in the county ot' Cool: and State of Illinois, respectively, luiveinvented certain new end useful Methods of Filling Molds for Founding,ot

10 which the following is ii send in some portions et {inslrs :ind

n non-varient angle will be pro- 80 )eeted Vto properly peek sind fillundercut Spaces or pockets in the flask.

Another object of the invention is to provide en improved method in willlie lessened.. rlihe invention consists in the several novel apparatusfor carrying the flasks.

provided Witlistandards PZ.

METHOD F FLLENG HOLDS FR FUDNG.

Specification of Letters Patent.

n, bothcitizens of the standards T and State of illinois,

improvements in full, clear, and exact bottom., 'is

Patent No. 1,309,835, n diiiiculty has been exin lugs 93 on the iinsl;

the piitternplnte :ind

th decidedly inwardly n send p tor ot the our -iieti'ers zi. molddownn'ziiwillv the invention is to prisiiigi; e easing: iti,

tor U3@ Wiili ivnds of under the convergent method by which send Wliioli inotor filling molds by ot the sund in ivhieli oted on ii sie forfeeding; send iii projector for f'riid pso detailed desem; ion et erencetney be had to on r ln illing ii Sask et iortli :ind more pursideelevation the invention. the projector. Fig'. 2 teken on line 2-52 oi?accessible trein tl e the tiuslr 'tor i'neliil Fig. 3 is :i erly fillthose portions being; shown in section.

more particularly portable earrings the outer sides et the pn be reedilyde sustained by carrying- :imes G rigidly secured in n'iiieli the pro'ily in direi*4 by pro" vnrinnt his machine comprises e i" ii rupi fiiioioc'tor-blnes senddownwardly :it liigrii motor i7 for driving therotdr; en iirn i pivoted it i9 und end projertor are supported tiverelation; :i i,ib to the nirni is pivoteil and v.

und sniieni..

'fii quantity r, pipe-uio 'in the drnwinffs, the send would not. row

under the outer portions ot' the those portions it possible to lill of?flask-carrier is pivotiilly suppe so the desk may be tilted bring theinlet opening et undercut portions of its wells into position Patented22%, i922..

he upper ends of A ilesk 3 3, lievng; 1li"- to receive l5 end en ouenadapted to rest on the nutterii plete of the tiltiible oerrier end holdthe send around the patterns 'to tion ot n mold tor founding. thecarrier adapted 'to pass through holes torni one see- Studs 22 on torelativelv vosition I' 'l il Ik desks eno mold them against reliiiiif'elateral movement This apparatus pnitieuliirlv -v- ,L r3 i-Lfy. ...C n 5F5 .iv supper. tu puttin-kinder nu ..iisii under type iidsipted to wielidi* ii.

li e runeliine. rei- .id patent.

th constrietei3 inlet or undercut portions or "porke ed. scent l il).

O he fissi end the Sii so the line of delivery of the sand will bellever. The latter is pivoted to the carrier sccting the inlet opening.

at 27 and is provided with a handle 28 positioned adjacent a handle 29fixed to the carrier. Lever 26 is normally held in position to hold theblock locked to rack 24by a spring 30 which has one of its endsconnected to the inner end of the lever, as at 31, and its other endconnect/ed to the carrier, as at 32. In order to cushion the flask andcarrier in their different positions,y springs 38 and 34 are interposedbetween the ends of the locking-block 25 and abutments on lever 26, theblock being slidable on the lever for that purpose.

In operation, the flaskis placed on the carrier, and the carriage isthen moved i`nt-o range of the projector of the moulding machine. Theoperator will then release the carrier and tilt it so the flask lwill bepositioned to permit the downwardly projected wads of sand from theprojector to pass through the inlet opening of the flask and directly toeither of the spaces between the outer sides of the patterns and the.flasksides, and will then set the locking-lever sothat the carrier andflask will be retained in said position. The projector will then beoperated t0 project sand into and to pack it in that portion of theflask which is then in the direct line and path of projection to formthe corresponding portion of the mold. Then the carrier and flask willbe tilted and set into oppositely inclined position, so as to bring thespace betwen the outer side of the other pattern and the otherflask-side in the line and path of projection inter' -The projector willbe over the flask until this space has been filled and packed with sand.Next, the carrier and flask will be set into horizontal vposition andthe projector will be operated to fill all of the unfilled space betweenand over the patterns and until the ask has been completely filled anduniformly packed with sand the sand being projected adjacent the arrowshown by full lines in Fig. '2. During each step of this Operation,theprojector will be shifted lon` rgitudinallylof` the flask to fill oneportion thereof from end to end. The filled flask will then be liftedoff the carrier and placed with a mating flask to form a complete mold.'In all positions, the carrier and flask will be cushioned by springs 33and 34 and, as a result, there will be no excessive spattering of thesand by the impact of the sand against the surfaces and sand in theflask which results in high speed projection. This cushioning is alsoadvantageous in lessening the tendency of the projected sand to displacethe apparatus when it is mountj ed on a portable carriage..

The invention exemplifies a method o filling flasks by high speedprojection, in which provision is made for projecting sand directly intoundercut spaces or those which are inaccessible by sand projected` in aconstant direction; also a method in which the spattering effect of thewa'ds of sand under high speed projection and the tendency of such sandto vibrate or displace the flask p are lessened by cushioning the flask.

The invention is not to be understood as restricted to the precisepractice set forth, since it may be modified within the scope of theappended claims, without departing from the spirit and scopeof theinvention.

Having thus described the invention, what we claim as new and desire tosecure by Letters Patent, is:

1. That improvement in making -molds which consists in projecting sandin a constant direction, and tilting a flask into different positionsrelatively tothe line of projection and projecting the sand directlyintol undercut and otherwise inaccessible spaces in the flask.

2. That improvement in making molds which consists in projecting sand ina constant direction, tilting and iholding the flask in differentpositions relatively to the line of projection, and moving the projectorover the flask in its different positions so that the sand will beprojected directly and packed in undercut and otherwise inaccessiblespaces. t

3. That .improvement in making; molds which consists in projecting sandinffofa flask and cushioning the flask.

4. That improvement in making molds which cosistsin projecting sand intoa flask. shifting the flask to vary the line of delivery of the sand,and cushioning the

